超级杂交稻茎秆形态结构及其与抗倒性的关系研究  

Stem Morphological Structure and Its Relation to Lodging Resistance of Super Hybrid Rice

作　　者：田文涛[1] 邵平[1] 王燚[1] 魏中伟[2,3] 王晓玲[1] 马国辉[1,2,3] 

机构地区：[1]长江大学农学院,湖北荆州434025 [2]湖南杂交水稻研究中心杂交水稻国家重点实验室,湖南长沙410125 [3]南方粮油作物协同创新中心,湖南长沙410128

出　　处：《杂交水稻》2017年第2期67-71,81,共6页Hybrid Rice

基　　金：国家自然科学基金(31271659)

摘　　要：以6个超级杂交稻组合为材料,研究了其茎秆形态和解剖结构及其与抗倒性的关系。结果表明:抗倒伏能力较强的杂交稻品种具有基部伸长节间较短、茎秆基部较粗的形态特征;超级杂交稻倒伏指数与茎秆基部第1,2,3伸长节间长度呈极显著正相关,与茎秆基部壁厚以及基部第2伸长节间小维管束数目和面积、大维管束面积和维管束总面积均呈显著负相关,而与株高和茎秆基部长、短轴直径相关不显著。说明缩短基部节间长度、增加茎秆基部壁厚和基部伸长节间维管束面积和数目,能增强超级杂交稻茎秆抗倒伏能力。Using six super and its relation to lodging hybrid rice varieties as the materials, the stem morphological and anatomical structure resistance of super hybrid rice were studied. The results showed that the varieties with stronger lodging resistance had the characteristics of shorter basal elongated internodes and thicker basal stem. The lodging index of super hybrid rice was highly significantly correlated positively to the length of the first, second and third basal elongated internodes, but significantly correlated negatively to the thickness of basal stem wall and the number and area of small vascular bundles, the area of big vascular bundles and the total area of vascular bundles of the second basal elongated internode. However, there was not a significant correlation of the stem 1 to plant height, the maximal culm diameter and minimal culm diameter of the basal stem. Therefore, cive to improving lodging thickening the basal stem nodes. resistance of super hybrid rice by shortening the length of basal elongated odging index it is condu- internodes, wall and increasing the number and area of vascular bundles of basal elongated inter-

关 键 词：超级杂交稻 抗倒性 形态解剖结构 茎秆 

分 类 号：S511.034[农业科学—作物学] S332